Why it is Not Patented? Insert Cardboard Into Angle Grinder and Amazed

In this video we made a polishing disc that can be attached to a grinder using old cardboard. If you are curious about DIY ideas made with cardboard, you should definitely see this idea, which includes the angle grinder trick. cardboard,cardboard box,cardboard crafts,cardboard diy,craft ideas,diy cardboard,diy ideas,cardboard ideas,cardboard craft,crafts ideas,craft ideas with paper,cardboard boxes,recycle cardboard,diy cardboard projects,ideas from cardboard,cardboard craft ideas,angle grinder,angle grinder hacks,angle grinder attachment,angle grinder life hacks,grinder hack,angle grinder idea,angle grinder modification,angle grinder attachments,angle grinder accessory